Cavity drum



FIG. 1 is an isometric front view showing the new design for a cavity drum;

FIG. 2 is a front view of the cavity drum;

FIG. 3 is a back view of the cavity drum;

FIG. 4 is a right side view of the cavity drum;

FIG. 5 is a left side view of the cavity drum;

FIG. 6 shows the view of FIG. 2 with the cavity drum rotated 45 degrees; and,

FIG. 7 is a bottom and top view of the cavity drum.

The broken lines, were present, in all FIGS. illustrate portions of the cavity drum that form no part of the claimed design. 

CLAIM The ornamental design for the cavity drum, as shown and described. 